Quantitative Aptitude - Arithmetic Ability Questions

The price of an article is cut by 9%, to restore to its original value, the new price must be increased by

In an army selection process, the ratio of selected to unselected was 6:1. If 90 less had applied and 30 less selected, the ratio of selected to unselected would have been 8:1. How many candidates had applied for the process?

Find out the odd word/letters/number/number pair from the given alternatives.

Select the odd word/letters/number/number pair from the given alternatives.

A train crosses a 550 m long platform in 36 seconds. How long was the train if it was travelling at the speed of 70 kmph?

The least number to be added to 13851 to get a number which is divisible by 87 is

If 15 persons can do a job in 30 days, then 30 persons with twice the efficiency can do the same job in how many days?

The average marks obtained by Raghav in 12 tests is 24. Zubeida has maintained an average of 23 so far but has taken only 9 of the tests. If each test is out of 30, at least how much Zubeida score in any one of the remaining three tests to still have a chance to match Raghav's performance?